Men's and women's Exofficio Underwear is a must have for Travellers! eg Men's were $29.99 now $17.97 or so.
Time to stock up! "Offering a fuller cut for an even more comfortable fit. These briefs from the Ex officio underwear range also dry quickly, breathe freely and wick moisture away for comfort during sporting activities or general wear. Travel light with these in your pack and watch them dry when you wash them in a sink or stream on the go. Featuring Ex officio's own highly breathable, moisture wicking Give-N-Go® fabric and the odour resistant AEGIS® Microbe Shield™ these briefs are a must-have travel companion."
Also, free post over $50 ; and if you aren't in Victoria you can visit in store (check on the website or ring ahead to check for stock)
Kudos to kobrien456 as I just copied the OP